Tue Mar 06 12:05:00 GMT 2001 peter@retep.org.uk
- Removed org.postgresql.xa.Test from the JDBC EE driver as it's an old
test class and prevented it from compiling.
This commit is contained in:
Peter Mount
parent
3df52c0c2a
commit
b562c62b5d
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@ -1,3 +1,7 @@
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Tue Mar 06 12:05:00 GMT 2001 peter@retep.org.uk
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- Removed org.postgresql.xa.Test from the JDBC EE driver as it's an old
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test class and prevented it from compiling.
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Fri Mar 02 10:00:00 GMT 2001 peter@retep.org.uk
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- Fixed build.xml so that PGclob is not built in the JDBC1.2 driver
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@ -1,377 +0,0 @@
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package org.postgresql.xa;
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import java.sql.*;
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import javax.sql.*;
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import javax.transaction.xa.*;
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public class Test
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{
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public static void main( String args[] )
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{
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XADataSource xaDS;
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java.io.PrintWriter log;
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log = new java.io.PrintWriter( System.out );
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try {
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xaDS = new XADataSource();
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xaDS.setDatabaseName( "test" );
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xaDS.setUser( "arkin" );
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xaDS.setPassword( "natasha" );
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xaDS.setLogWriter( log );
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Thread1 thread1;
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thread1 = new Thread1();
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thread1.xaConn = xaDS.getXAConnection();
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thread1.xid1 = new XidImpl();
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Thread2 thread2;
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thread2 = new Thread2();
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thread1.thread2 = thread2;
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thread2.thread1 = thread1;
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thread2.xaConn = xaDS.getXAConnection();
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thread2.xid1 = thread1.xid1;
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thread2.xid2 = new XidImpl();
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thread1.start();
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thread2.start();
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} catch ( Exception except ) {
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System.out.println( except );
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except.printStackTrace();
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}
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log.flush();
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}
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}
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class Thread1
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extends Thread
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{
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public void run()
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{
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Connection conn;
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XAResource xaRes;
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Statement stmt;
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ResultSet rs;
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try {
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conn = xaConn.getConnection();
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xaRes = xaConn.getXAResource();
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} catch ( Exception except ) {
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System.out.println( except );
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return;
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}
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// Initially the table should have no value.
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try {
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stmt = conn.createStatement();
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stmt.executeUpdate( "update test set text='nothing' where id=1" );
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// Begin a transaction on this connection.
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// Perform an update on the table.
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System.out.println( "[Thread1] Starting transaction" );
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try {
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xaRes.start( xid1, XAResource.TMNOFLAGS );
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} catch ( XAException except ) {
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System.out.println( except );
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return;
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}
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System.out.println( "[Thread1] Updating table" );
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try {
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stmt = conn.createStatement();
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stmt.executeUpdate( "update test set text='first' where id=1" );
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// Thread2 will start a new transction and attempt
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// to perform an update on the table and will lock.
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System.out.println( "[Thread1] Waking up Thread2" );
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thread2.interrupt();
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try {
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sleep( Integer.MAX_VALUE );
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} catch ( InterruptedException except ) { }
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// Perform a select from the table just to prove
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// that Thread2 failed in its update.
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System.out.println( "[Thread1] Selecting from table" );
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try {
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stmt = conn.createStatement();
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rs = stmt.executeQuery( "select text from test where id=1" );
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rs.next();
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System.out.println( "First = " + rs.getString( 1 ) );
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rs.close();
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// Thread2 will now attempt to join our transaction
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// and perform an update on the table.
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System.out.println( "[Thread1] Waking up Thread2" );
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thread2.interrupt();
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try {
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sleep( Integer.MAX_VALUE );
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} catch ( InterruptedException except ) { }
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// Perform a select from the table to prove that
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// Thread2 managed to update it.
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System.out.println( "[Thread1] Selecting from table" );
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try {
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stmt = conn.createStatement();
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rs = stmt.executeQuery( "select text from test where id=1" );
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rs.next();
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System.out.println( "First = " + rs.getString( 1 ) );
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rs.close();
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// We now end the transaction for this thread.
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// We are no longer in the shared transaction.
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// Perform an update on the table and the update
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// will lock.
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System.out.println( "[Thread1] Ending transaction" );
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try {
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xaRes.end( xid1, XAResource.TMSUCCESS );
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} catch ( XAException except ) {
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System.out.println( except );
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return;
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}
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System.out.println( "[Thread1] Selecting from table" );
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try {
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stmt = conn.createStatement();
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stmt.executeUpdate( "update test set text='first' where id=1" );
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// Thread 2 will now end the transcation and commit it.
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System.out.println( "[Thread1] Waking up Thread2" );
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thread2.interrupt();
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try {
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sleep( Integer.MAX_VALUE );
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} catch ( InterruptedException except ) { }
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// Perform a select on the table to prove that it
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// was only updated inside the transaction.
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System.out.println( "[Thread1] Selecting from table" );
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try {
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stmt = conn.createStatement();
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rs = stmt.executeQuery( "select text from test where id=1" );
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rs.next();
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System.out.println( "First = " + rs.getString( 1 ) );
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rs.close();
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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}
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javax.sql.XAConnection xaConn;
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Xid xid1;
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Thread thread2;
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}
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class Thread2
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extends Thread
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{
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public void run()
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{
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Connection conn;
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XAResource xaRes;
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Statement stmt;
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ResultSet rs;
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try {
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conn = xaConn.getConnection();
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xaRes = xaConn.getXAResource();
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} catch ( Exception except ) {
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System.out.println( except );
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return;
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}
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// Thread2 immediately goes to sleep, waits
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// for Thread1 to wake it up.
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try {
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sleep( Integer.MAX_VALUE );
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} catch ( InterruptedException except ) { }
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// Begin a transaction on this connection.
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// Perform an update on the table. This will
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// lock since Thread1 is in a different transaction
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// updating the same table.
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System.out.println( "[Thread2] Starting transaction" );
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try {
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xaRes.start( xid2, XAResource.TMNOFLAGS );
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} catch ( XAException except ) {
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System.out.println( except );
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return;
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}
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System.out.println( "[Thread2] Updating table" );
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try {
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stmt = conn.createStatement();
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stmt.executeUpdate( "update test set text='second' where id=1" );
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// Thread1 will now proof that it owns the
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// transaction.
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System.out.println( "[Thread2] Waking up Thread1" );
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thread1.interrupt();
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try {
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sleep( Integer.MAX_VALUE );
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} catch ( InterruptedException except ) { }
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// We will now join the transaction shared with
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// Thread1 and try to update the table again.
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System.out.println( "[Thread2] Dumping transaction" );
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try {
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xaRes.end( xid2, XAResource.TMFAIL );
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// xaRes.rollback( xid2 );
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xaRes.forget( xid2 );
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} catch ( XAException except ) {
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System.out.println( except );
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return;
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}
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System.out.println( "[Thread2] Joining transaction of Thread1" );
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try {
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xaRes.start( xid1, XAResource.TMJOIN );
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} catch ( XAException except ) {
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System.out.println( except );
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return;
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}
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System.out.println( "[Thread2] Updating table" );
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try {
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stmt = conn.createStatement();
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stmt.executeUpdate( "update test set text='second' where id=1" );
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// Thread1 will now proof that it could update
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// the table.
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System.out.println( "[Thread2] Waking up Thread1" );
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thread1.interrupt();
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try {
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sleep( Integer.MAX_VALUE );
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} catch ( InterruptedException except ) { }
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// We will now end the transaction and commit it.
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System.out.println( "[Thread2] Commiting transaction" );
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try {
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xaRes.end( xid1, XAResource.TMSUCCESS );
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xaRes.prepare( xid1 );
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xaRes.commit( xid1, false );
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xaRes.forget( xid1 );
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} catch ( XAException except ) {
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System.out.println( except );
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return;
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}
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// Perform a select on the table to prove that it
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// was only updated inside the transaction.
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System.out.println( "[Thread2] Selecting from table" );
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try {
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stmt = conn.createStatement();
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rs = stmt.executeQuery( "select text from test where id=1" );
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rs.next();
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System.out.println( "First = " + rs.getString( 1 ) );
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rs.close();
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stmt.close();
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} catch ( SQLException except ) {
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System.out.println( except );
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}
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// Thread1 will now proof that the table was only
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// updated inside the transaction. Thread 2 will die.
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System.out.println( "[Thread2] Waking up Thread1" );
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thread1.interrupt();
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}
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javax.sql.XAConnection xaConn;
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Xid xid1;
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Xid xid2;
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Thread thread1;
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}
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class XidImpl
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implements Xid
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{
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public byte[] getBranchQualifier()
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{
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return null;
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}
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public byte[] getGlobalTransactionId()
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{
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return null;
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}
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public int getFormatId()
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{
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return 0;
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}
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}
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